Smoke-bleacher and soot-trap



No. 615,743. Patented Dec. l3, I898. Lfi E. F. PRESTON. I SMOKE BLEACHERAND 8001' TRAP.

(Application filed Aug. 27, 1897.) (N o M o d e I.)

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ATTORNEY m: Non-us vzrsns co, mow-urns WASHINGTON, D. r:v

UNITED STATES PATENT UFFICE.

EDWARD F. PRESTON, OF ALLEGHENY, PENNSYLVANIA.

SMOKE-BLEACH ER AND SOOT=TRAP.

SPECIFICATION forming part of Letters Patent No. 615,743, dated December13, 1898.

Application filed August; 27, 1897. Serial No. 649,723- (NO mod l thatwhen uninterrupted falls to the roof of the building or-to the ground oris carried by the Winds or currents of air over a large area of space,and thereby making cleanliness impossible.

The invention aims to accomplish the above result by means of a centraldraft-flue located upon the top of the chimney or smokestack and havinga casing surrounding the same having no draft from below, the centraldraft-flue having a hood or deflector with inclined flanges above itsupper end for deflecting the smoke emitted through the chimney orsmoke-stack into the space between the outside of the flue and the outercasing, a supplemental flue is arranged above the central draft-fluehaving a hood or deflector upon its upper end for deflecting the smokeinto a bleaching-chamber, wherein the smoke comes in contact with thestill air therein and the soot or carbon-dust is permitted to fall intothe soot-trap formed by the converging outwardly of the lower end of thewall of the supplemental flue and the inwardly converging of the wall ofthe casing at that point.

In describing the invention in detail referonce is had to theaccompanying drawing,

forming a part of this specification, in which like reference-figuresdenote corresponding parts throughout the description.

The drawing illustrates a vertical sectional View of my improvedsmoke-bleacher and soot-trap, in which-- 1 designates the centraldraft-flue, and 2 the wall of said flue; 3, the casing surrounding thesaid central draft-flue and the supplemental fiue 5.

4 denotes the walls of the supplemental flue; 9, the bleaching-chamber,formed between the casing and the walls of the supplemental flue; 12,the soot-trap, formed by the lower end of the wall of the supplementalflue converging outwardly and connected to the casing, which convergesinwardly at that point.

6 and 8 designate hood with downwardlyextending flanges and are mountedupon the central draft-flue and the supplemental flue for deflecting thesmoke by standards 7 and -13, which are secured to the hood and flues bysuitable fastening means.

10 is a hood or cap supported by standards 11, which are secured to theupper end of the casing 3.

The operation of the device can be readily understood from the foregoingdescription.

Having described my invention, what I claim, and desire to secure byLetters Patent, is--- In a device of the character described, a centraldraft-flue and surrounding casing projecting above the same having nodraft from below, a hood mounted on said flue for deflecting the smoke,a supplemental flue arranged above said central draft-flue, a hoodmounted on said supplemental flue for deflecting the smoke around thesame, a bleaching-chamber having no draft from below having at its lowerend a soot-trap formed by the EDWVARD F. PRESTON.

Witnesses:

I JOH NOLAND,

THOS. M. BOYD, Jr.

